Hmm... OK, that's different from what I saw on my discs. You're seeing something on the surface itself and not the edges.
When you say "dye layer", do you mean that it's actually in between the two substrates so that it can't be scraped off?
I saw a posting in the media tests forum with some comments about some foreign material found on a brand which used to be very good
The comments also say that it couldn't be removed and that it was found close to the outer edge. Dunno if that's the same thing as what you're seeing.
When I get home tonight, I'll look through my recent TY purchase to see if I see anything like your photo.
Please post what you hear back from TY as I'm extremely curious myself.
Edit/Update: I have a 50ct spindle of TY DVD+R and DVD-R's and just went through each one. I didn't find any such defect. Most likely I'll be buying more in the future, and if I do find anything like this, I'll let you know. Please keep us posted!...